초록 ▼

The present invention provides amorphous non-laminar nickel phosphorous alloys, amorphous non-laminar nickel cobalt phosphorous alloys, or amorphous non-laminar cobalt phosphorous alloys. These alloys are useful in the formation of metal articles and metal-coated articles, including high precision d

The present invention provides amorphous non-laminar nickel phosphorous alloys, amorphous non-laminar nickel cobalt phosphorous alloys, or amorphous non-laminar cobalt phosphorous alloys. These alloys are useful in the formation of metal articles and metal-coated articles, including high precision devices and molds for plastics. In addition, the alloys of the present invention are useful in repairing damaged metal surfaces.

대표청구항 ▼

The present invention provides amorphous non-laminar nickel phosphorous alloys, amorphous non-laminar nickel cobalt phosphorous alloys, or amorphous non-laminar cobalt phosphorous alloys. These alloys are useful in the formation of metal articles and metal-coated articles, including high precision d

The present invention provides amorphous non-laminar nickel phosphorous alloys, amorphous non-laminar nickel cobalt phosphorous alloys, or amorphous non-laminar cobalt phosphorous alloys. These alloys are useful in the formation of metal articles and metal-coated articles, including high precision devices and molds for plastics. In addition, the alloys of the present invention are useful in repairing damaged metal surfaces. ng and contacting the bond coat layer, thereby forming a coated substrate; thereafter placing the coated substrate into a heating apparatus operating with an oxidizing atmosphere; and thereafter heating the coated substrate in the heating apparatus to a temperature of from about 1850° F. to about 2100° F. and a partial pressure of oxygen of from about 10-3torr to about 10-5torr, for a time of at least about 30 minutes to form a final article. 10. The method of claim 9, wherein the step of removing any oxide formed includes the step of roughening the bond coat. 11. A method for preparing a nickel-base superalloy article protected by a thermal barrier coating, comprising the steps of furnishing a coated substrate comprising a substrate made of a nickel-base superalloy, a bond coat layer overlying and contacting the substrate, and a ceramic layer overlying and contacting the bond coat layer, wherein the step of furnishing includes the step of removing any oxide that would otherwise be present between the bond coat layer and the ceramic layer; thereafter placing the coated substrate into a heating apparatus; and thereafter heating the coated substrate in the heating apparatus to a temperature sufficient to grow a layer comprising primarily alpha alumina between the bond coat layer and the ceramic layer, to produce a final article. 12. The method of claim 11, wherein the step of heating includes the step of heating the coated substrate to a temperature of from about 1850° F. to about 2100° F., for a time of at least about 30 minutes. 13. The method of claim 11, wherein the bond coat layer is a diffusion aluminide. 14. The method of claim 11, wherein the bond coat layer is an overlay coating. 15. The method of claim 11, wherein the ceramic layer comprises yttria stabilized zirconia. 16. The method of claim 11, wherein the time of the step of heating lasts from about 30 minutes to about 12 hours. 17. The method of claim 11, wherein the step of heating includes the step of heating the coated substrate in a partial pressure of oxygen. 18. The method of claim 11, wherein the step of heating includes the step of heating the coated substrate in a partial pressure of oxygen of from about 10-3torr to about 10-5torr. 19. The method of claim 11, including an additional step, commenced after the step of heating is completed, of placing the final article into service in a jet engine. 20. The method of claim 11, wherein the step of removing any oxide formed includes the step of roughening the bond coat.